Microsoft have come up with a fix for the Windows Metafile vulnerability
May take a while to roll out automatically, but you can download it and run it for yourself:
http://www.microsoft.com/technet/security/bulletin/MS06-001.mspx
then choose the version of Windows you're using. It's a fairly fast download, under a meg.
Incidentally, Don't you think Bush looks tired? If you know where this is coming from, pass it along.